Intrahepatic arterioportal shunting in a case of hepatocellular carcinoma is not uncommon and is probably due to the abnormal connection between the arterial and venous supply of the tumor. On a triphasic study of the liver, the possible arterioportal shunt will demonstrate early filling of a portal vein branch with contrast material during the arterial phase, without the obvious filling of SMV, splenic vein or the main portal vein trunk.